# 5 RDAPAPI alternatives in 2026

Last updated: November 7, 2026.

Other providers sell domain WHOIS APIs like RDAPAPI's. WhoisJsonAPI costs $0.15 per 1,000 domains, Enterno $0.164 and WhoisJSON $0.167.

## Domain WHOIS API alternatives

On our RDAPAPI plan pages, we compare each RDAPAPI plan with other providers' plans. We list other providers' plans below, cheapest per 1,000 domains first.

- [WhoisJsonAPI, $299 monthly, Enterprise, GET /v1/{domain}](https://datacircle.dev/domain-whois-apis/whoisjsonapi/49-monthly#299-monthly-enterprise-get-v1-domain): $0.15 per 1,000 domains
- [Enterno, ₽2,511 yearly](https://datacircle.dev/domain-whois-apis/enterno/free-scout#2511-yearly): $0.164 per 1,000 domains
- [WhoisJSON, $300 yearly](https://datacircle.dev/domain-whois-apis/whoisjson/free#300-yearly): $0.167 per 1,000 domains
- [HackerTarget, $2,400 yearly](https://datacircle.dev/domain-whois-apis/hackertarget/free#2400-yearly): $0.329 per 1,000 domains
- [domainIQ, $149.95 monthly, Expert, GET /api, 15,000 requests a day](https://datacircle.dev/domain-whois-apis/domainiq/49-95-monthly-pro-get-api-1000-requests-a-day#149-95-monthly-expert-get-api-15000-requests-a-day): $0.333 per 1,000 domains

Compare every domain WHOIS API plan: [Domain WHOIS API pricing: free and cheapest plans compared](https://datacircle.dev/domain-whois-api-pricing)